1895.] MICROSCOPICAL JOURNAL. 233 



29. This objective can be used dry or wet, with a 

 cover one two-hundred-and-fiftieth inch thick, or without 

 a cover. 



Partial List of Papers involving the One-seventy-Jifth. 

 BY G. B. HARKIMAN, D. D. S. 



" Discovery of Nerve Fibers in the Soft Solids of Dentine." Dental Cos- 

 mos, January, 1870. 



" The Mirroscope." Dental Register, March, 1874. 



" The Use of the One-Seventy-Fifth Objective in Microchemical Examina- 

 tions of Blood- Stains. " (Unpublished. ) 



BY E. CUTTER. 



Lecture before the Chicago Medical Society, February 17, 1879, on ' ' The 

 Morphology of Diseased Blood." Chicago Medical Journal, 1879. 



'"Tolles' One-Seveu.;y -Fifth Objective, its History, Uses and Construction . " 

 American Journal of Arts and Sciences, New Haven, August, 1879. 



" Leavens and Man." Written by invitation of the Philosophical Society 

 of Great Britain, 1882. (Bread bacteria are figured among the fifty or more 

 illustrations). 



"A New Physical Sign of the Pre-Tubercular State." 1877, sixty-eight 

 illustrations. 



Illustrated lecture on " Alcohol and Blood." Tribune (Cambridge, Jan- 

 uary 15, 1879. 



Microscopical Technique Applied to Histology. — X. 



[FROM THE FRENCH OF RENE BONEVAL.] 



(Continued from page 197, July, 1895.) 



Intestinal coats ; villi. — For the different layers no 

 special technique is needed. Sections made of the open- 

 ed intestine, after hardening by gum and alcohol, 

 stained in picro-carmine, supply the preparations. The 

 muscular elements of the villi are well seen in all these 

 sections, especially when, after fixing by bichromate, 

 they are stained in hsematoxylin and eosine. Mount in 

 balsam. 



Blood vessels. — To study tliese, inject them by the 

 method already described. Decapitate a rat, open the 

 thorax and introduce the syringe into the thoracic aorta. 



